万里长江险在荆江的主要原因是[ ] A．支流多 B．流域广 C．无湖泊调节洪水

下列属于所得税后利润提取的基金，其中属于中外合资企业的是（）。

A．法定盈余公积金

B．公益金

C．任意盈余公积金

D．职工奖励

（共5小题；每小题2分，满分10分）

根据短文内容，从下框的A---F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。

A．Airport services

B．Air transport prices

C．Transport by plane

D．Development E. Fast growth in the US airlines

F. Beginning time

61．___________

Airplanes are used to carry passengers, cargo and mail．Air transport companies run scheduled airlines and non－scheduled services over local， national， and international routes. The aircraft run by these companies change from small planes to large planes.

62．____________

The first air passenger services began in 1910，when dirigibles began working between several German cities. The first scheduled airplane service to carry passengers began in the US in 1914. Several experimental airmail flights took place in India，Europe, and the USA before World War I， but air transport services did not become a true business until after the war.

63. ____________

During world War II，intercontinental air transport began to become well set-up. After the war the new long-distance planes with developed equipment were increasingly able to prevent storms and strong wind and make flights cheap. Jumbo Jets began working in 1970．

64. ___________

During the 1970s the number of home passengers on US airlines increased about 78％，and during the 1980s the number was up about 58％.In 1990 there were 41. 8 million international passengers: the number was a 75% increase over 1980.

65. ___________

Major airports provide all kinds of services to make travel easy and pleasant for passengers. These change from such basic services as ticket – sales counters and restaurants to luxury hotels, shopping centers and play areas for children.

钩端螺旋体病应用青霉素G治疗如发生赫氏反应时，最应警惕的是（）

A.黄疸加深

B.肝功能衰竭

C.肾功能衰竭

D.肺大出血

E.脑膜脑炎

（），（）和角频率是反映交流电变化快慢的物理量

以下不属于免征增值税的有（）

A.古旧图书

B.果汁

C.啤酒

D.农膜